//基于 Callable 实现 1+2+3+...+1000

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * Author: WJW
 * Date: 2024-08-18
 * Time: 23:43
 */
public class ThreadDemo1 {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        Callable<Integer> callable = new Callable<Integer>() {
            @Override
            public Integer call() throws Exception {
                int result = 0;
                for (int i = 1; i <= 1000 ; i++) {
                    result += i;
                }
                return result;
            }
        };

        FutureTask<Integer> futureTask = new FutureTask<>(callable);
        Thread t = new Thread(futureTask);
        t.start();

        //不需要使用join 使用futureTask 获取结果
        System.out.println(futureTask.get());
    }
}
